[Halld-jlab] Hall D Staff Meeting Notes, August 13, 2012
Mark M. Ito
marki at jlab.org
Mon Aug 13 18:46:49 EDT 2012
Folks,
Find the notes below and at
https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_August_13,_2012
-- Mark
_____
Private:Hall D Staff Meeting, August 13, 2012
Present: Fernando Barbosa, Vladimir Berdnikov, Eugene Chudakov (chair),
Hovanes Egiyan, Mark Ito, Vanik Kakoyan, John Leckey, Bert Manzlak,
Lubomir Pentchev, Dmitry Romanov, Elton Smith, Simon Taylor, Ivan
Tolstukhin, Tim Whitlatch, Elliott Wolin, Beni Zihlmann
Announcements, Eugene
* The Lab will cut budget by 7%, exact meaning is not known
+ 12 GeV activities told to go ahead as if nothing is going to
happen
+ operations will be affected
+ caused by sequestration (automatic cuts of spending by
congressional agreement)
+ despite this, Rolf Ent signed the position request
* Hall D and the 12 GeV schedule
+ we have slipped past couple of months, 0.5 million behind
+ several things are late: BCAL, magnet for tagger, electronics
(part of it)
+ we should try to advance procurements if possible
+ also concentrate on work we can claim
* Hall governance document, one for all halls, has been developed
+ entry to Hall D will not require TLD
+ there is a requirement that work coordinator report at regular
weekly meeting
Construction, Tim
* solenoid magnet power supply moved into position, getting ready to
be wired in
* tagger magnet due in at begining of Nov., vacuum chamber just
before that
* downstream platform: re-weld of crooked piece done
* cryo platform: being erected in parking lot
* pair spectrometer stand design and analysis done
* vacuum stuff for solenoid test on order: additional pumps, etc.
* FCAL frame will ship soon from IU, then welded to platform
* counting house electrical work near done
* gantry for tagger magnet: stress analysis done, small adjustment to
design required
* will paint solenoid this afternoon: red and blue
* BCAL rails came in, will be installed
* carts for FDC, CDC: 3 or 4 weeks out
* cryo can due at end of the month
FDC, Lubomir
* corrosion issue
+ can reproduce effect visually using o-ring pressed against
kapton, with moisture
+ observe same residue around o-ring, only for EPDM, not much
for Viton, nothing for Viton with vacuum grease
+ thinks we are safe with Viton and grease
+ more tests with production chambers and small scale prototype,
no moisture
studies continue
* cathodes: some channels (3 to 5% of them), contacts done with
one-sided conductive tape, resistance changes with mechanical
deformation, signal does not change
+ question: will it get worse over time
+ variations in surface density of silver-coated glass balls
noted, pressure moves location of balls
* grounding clips came in, being installed on package 3
* packages 3 and 4 being flushed with nitrogen.
* 4 cells done on package 4
* using spare 14 sets to build frames
+ removing foils from first package
BCAL, Elton
* light guides are behind schedule, 3 months behind project schedule
+ seems like they are about to start production
+ last week all issues thought to be resolved
+ hoping for two sets soon to finalize gluing procedure and
set-up procedure
+ substantial quantities next month
+ if production starts next month may be able to meet the
project schedule
* student form Regina working characterizing SiPM's, assigning them
to different boards, in preparation for populating them
* fixture for mounting led board designed
BCAL electronics, Fernando
* originally, dynamic range for signal of 400, some ringing seen, i.
e., ground bounce, increasing thickness of copper layer fixed it
+ also increased dynamic range of SiPM's, originally 20 k
photons, need to increase to 50 k
+ ready to test in a week from today
* lemo cables decided on
* by end of next week, should be ready with two modules
* power per board will be 30% lower
Safety, Bert
* Eugene, Tim, and Tom Carstens, on Wed., will be audited by outside
agency
+ looking at safety and work process of Hall D group
+ three hour interview
+ goes with work process and methods that we have been using
over the last few years
+ done every six months to get certified
+ will audit Hall D extra work process
* the Hall continues to operate safely.
* incident in Hall B: taking contractors down, group from facilities
and procurement did not have TLD's
* training: look at your opportunities, if not taken please do it, or
remove obsolete items
* counting house TLD badges moved a week ago, memos were sent out
* work on counting house in progress
Beni
* last week, at Gordon conference on photo nuclear reactions
+ hadron spectroscopy: Mike Pennington
+ lattice: Robert Edwards
+ talks on amplitude analysis
* gas system coming together
Hovanes
* MOU with Yerevan being massaged
* power in rack room coming soon, will install and power racks by end
of month
* then fiber from telecom to rack room
* new printer ordered
* microscope detector electronics controls system can now be
designed, interface on a private network
+ specifications for an API written to allow integration into
EPICS
* procurements: started receiving terminal servers, FPGA boards, 3
NIM bins
* Vanik leaving this week, worked on motor controls, will return
after a few months
Mark
* FSU contract
+ response to JLab questions from FSU received
+ technical evaluation report filed
* FIU contract
+ draft of SOW written
+ next step: schedule/milestones
* data challenge progressing
* new release of sim-recon at end of last month
* encouraged response to scientific computing survey
Simon
* alignment of FDC wire planes working
+ phi offsets added
+ reproduced for downstream planes
+ upstream planes not responding as expected
* working on vertexing software for Paul Mattione's kinematic fitting
code
Yi
* NIM A paper under review, in archive
* working on programming for solenoid
* writing proposal for early career program
* simulation of J/psi and open charm
* simulation of phi and omega photo-production
Elton
* last week went to Chiral Dynamics, some interesting talks related
to Primakoff, rare eta decays, and pion polarizability
* DAPHNE may come back on
+ Super B? funding an issue
Elliott
* fibers going in in mid-september
+ Bryan Hess doing a calculation
+ rack room to telecom
* inventory database, improvements to GUI
* from Dave Abbott , documentation on raw data API
+ code by end of month
* students, working on rootspy and event display
+ discussion had with Sergey Boyarinov on rootspy
* log book prototype exists, to be used for solenoid test
* controls: quench detector, design modifications ready to be done
now
+ will have 270 V max during quench
* schedule input from Tom not yet received
* will complete solenoid power supply work by end of month
* Josh Foyles working on test plan for the solenoid
* FMEA basically done, work can be used in future OSP
John
* at conference last week
* working on schedule and design for FCAL enclosure
Dmitry
* plan for users switching to calibration database
* trigger database: work with Sascha, plans for software framework
Ivan
* designing SiPM frame, prototype for pair spectrometer
+ light will be collected by two fibers, one on each side of
scintillator
+ Alex Somov will order scintillator and fibers from St. Gobain
Vladimir
no comment
Fernando
* flash 250 testing at UMass: started, but computer upgrade problem
halted progress
* flash 125, Cody working on procurement
* discriminators: getting production units, 35 in hand
* f1 tdc: v3 received last week, front end test next
+ procurement placed
* stuff arriving over next week or two
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